I've updated to 15.04 this morning, and the performance after installing
the normal updates was still poor. I didn't attempt using the staging
updates, or the latest xserver-xorg-video-intel update, and instead
downgraded to 14.04.2 in the meanwhile.

On Tue, 31 Mar 2015 18:35 Bruce Pieterse <email address hidden> wrote:

> After upgrading from 14.10 to 15.04, there seems to be better
> performance. Things aren't as slow and choppy as before. It's possible
> that this issue has been fixed in Vivid Vervet (15.04) and those who are
> suffering from this and are able to test and confirm, please share your
> findings here.
>
> Thanks.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1386721
>
> Title:
>   Graphics Slow After Upgrade 14.04 - 14.10
>
> Status in Ubuntu GNOME:
>   Confirmed
>
> Bug description:
>   Using Gnome Ubuntu 14.10, Dell XPS 13, intel 915 Graphics
>
>   After upgrading from 14.04 to 14.10 there are a lot of places where
>   the graphics are working much slower than they were before:
>
>   - Gnome Shell Interface is very sluggish, visible "chops" (redrawing)
>   when pressing the [Super] key.
>
>   - Selecting text in Gedit takes a full second pr. line
>
>   Experiences some subjective improvement when I booted kernel 3.13.0-37
>   instead of 3.16.0-23, but that may be my imagination as the problem
>   persists.
>
>   I've searched google, forums, found a couple of relevant links that
>   point to the issue being the Intel drivers.
>
>       http://askubuntu.com/questions/53962...E2%86%92-14-10
>       http://www.webupd8.org/2014/10/ubunt...ent-1652086424
>
>   But the drivers currently in 14.10 should be newer than those supplied
>   by Intel to 14.04 so that doesn't make sense to me. As one Intel
>   developer wrote:
>
>   "I would like to point out that since what we do is bring more ecent
>   versions of the software to the target distributions than they ship
>   with, a 14.04 targeted installer is unlikely to bring much to a 14.10
>   installation, which most likely has the same or more recent versions
>   already anyway."
>
>   Source: https://01.org/linuxgraphics/node/375
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 14.10
>   Package: xorg 1:7.7+7ubuntu2
>   ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
>   Uname: Linux 3.16.0-23-generic x86_64
>   ApportVersion: 2.14.7-0ubuntu8
>   Architecture: amd64
>   CompizPlugins: No value set for `/apps/compiz-1/general/
> screen0/options/active_plugins'
>   CompositorRunning: None
>   CurrentDesktop: GNOME
>   Date: Tue Oct 28 15:24:30 2014
>   DistUpgraded: 2014-10-25 20:59:36,052 DEBUG enabling apt cron job
>   DistroCodename: utopic
>   DistroVariant: ubuntu
>   DkmsStatus: i915-3.15-3.13, 0.01, 3.13.0-37-generic, x86_64: installed
>   ExtraDebuggingInterest: Yes, if not too technical
>   GraphicsCard:
>    Intel Corporation Haswell-ULT Integrated Graphics Controller
> [8086:0a16] (rev 09) (prog-if 00 [VGA controller])
>      Subsystem: Dell Device [1028:060a]
>   InstallationDate: Installed on 2014-06-14 (135 days ago)
>   InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release amd64
> (20140416.2)
>   MachineType: Dell Inc. XPS13 9333
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-23-generic
> root=UUID=105bbbd1-365e-4063-bdca-fc5431faf5dc ro quiet splash
> vt.handoff=7
>   SourcePackage: xorg
>   Symptom: display
>   UpgradeStatus: Upgraded to utopic on 2014-10-25 (2 days ago)
>   dmi.bios.date: 12/11/2013
>   dmi.bios.vendor: Dell Inc.
>   dmi.bios.version: A02
>   dmi.board.name: 0GFTRT
>   dmi.board.vendor: Dell Inc.
>   dmi.board.version: A00
>   dmi.chassis.type: 8
>   dmi.chassis.vendor: Dell Inc.
>   dmi.chassis.version: 0.1
>   dmi.modalias: dmi:bvnDellInc.:bvrA02:bd12/11/2013:svnDellInc.:
> pnXPS139333:pvr:rvnDellInc.:rn0GFTRT:rvrA00:cvnDellInc.:ct8:cvr0.1:
>   dmi.product.name: XPS13 9333
>   dmi.sys.vendor: Dell Inc.
>   version.compiz: compiz N/A
>   version.ia32-libs: ia32-libs N/A
>   version.libdrm2: libdrm2 2.4.56-1
>   version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.0-0ubuntu3
>   version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
>   version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.0-0ubuntu3
>   version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1
>   version.xserver-xorg-input-evdev: xserver-xorg-input-evdev
> 1:2.9.0-1ubuntu2
>   version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2
>   version.xserver-xorg-video-intel: xserver-xorg-video-intel
> 2:2.99.914-1~exp1ubuntu4
>   version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
> 1:1.0.11-1ubuntu2
>   xserver.bootTime: Tue Oct 28 13:44:57 2014
>   xserver.configfile: default
>   xserver.errors:
>
>   xserver.logfile: /var/log/Xorg.0.log
>   xserver.outputs:
>    product id                                4933
>    vendor                                     CMN
>   xserver.version: 2:1.16.0-1ubuntu1
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu-gnome/+bug/1386721/+subscriptions
>